In the last 10 years, I've tried every fabric softener iherb.com carries and above all others have decided on the Earth and Sun Fabric Softener sheets.
It's important to be prepared for the fact that they aren't typical dryer sheets made from compressed rayon fibers but rather papery instead. They feel and look almost like waxed paper with perforations covering the entire sheet.
The sheets are folded in thirds with a perforated "tear line" down the middle. Before opening the sheet, tear it in half along the line. When the sheet is unfolded then torn, it tends to rip unevenly. Then open each half and toss it in the dryer on your laundry and start the cycle. At the end of the cycle, the paper sheets will be bunched up and should be discarded.
While the scented sheets smell like baby aspirin, there is no lingering smell at the end of the cycle. In other words, if you're looking for something to scent your laundry, look elsewhere (Mrs Meyers Geranium liquid fabric softener is great for that).
The resulting laundry is just dry and non-static. It's not freakishly soft like it's been coated in lotion as is the case with many other fabric softeners.
My skin tends to react with dermatitis to most scented and unscented fabric softeners (though not all) but this one causes me no issues.
If you want a mild, gentle, non-irritating dryer sheet to reduce static and leave no film on your clothes, this is it! We use a box or two a year.

These work better than no sheets in the dryer, but not as well as most fabric softener sheets.
That being said, these are also a lot more environmentally friendly.
I plan to continue using these and reordering more when needed.